Quote Originally Posted by SkOrPn View Post
I noticed something weird, so maybe I do not understand IBT and its LinX pack results. I am getting 65 Gflops at 200x20, but 82 Gflops at 182x22, 83 Gflops @185x22 and only 81 to 83 above 190 bclk x 22. Why does this chip perform the same at 4ghz then it does at 4.4ghz? Am I not understanding Gflops, or is that strictly a voltage thing? Because when I lower voltage at the same bclk+multi the Gflops also lowers, although the test passes. Did I just lose a wee bit of performance by dropping voltage?
UCLK speed is the most likely culprit. Performance of the 6c12t gulftowns is impacted heavily by UCLK.
4.5GHz CPU 2166MHz RAM with 3.2GHz UCLK = 86GFlops:


4.7GHz CPU 2200MHz RAM with 3.78GHz UCLK = 91GFlops:


4.8GHz CPU 2000MHz RAM with 3.8GHz UCLK = 93GFlops:


So, you can see, my 24/7 oc provides a really nice balance, where at 4.66GHz CPU 1866MHz RAM and 3.73GHz UCLK(2x RAM) provides about the same 91GFlops as the 4.7GHz UCLK with super fast memory and only marginally faster UCLK. It's all about doubling that memory speed.